We asked a few people in the design world to share their favorite apps:

Tricia Huntley, Washington interior designer: Huntley has had her own Washington interior design firm, Huntley & Co., for seven years. She lives in a midcentury home with her dog, Nina, and loves fashion, travel, reading and exploring new cocktails and restaurants.

Shazam: For any of us born before the '80s, this music app is like a dream come true.

Urban Daddy: I can never remember the name of a favorite hot spot on demand. Urban Daddy takes apprehension out of spontaneity.

Convert: I use this at my desk for basic conversions (dimensions, yardage) and when I'm abroad for work/play when everything needs to be converted — length, liquids, distance, temperature.

Christen Bensten, design blogger, Arlington, Va.: Bensten, who blogs at Blue Egg Brown Nest, is a furniture refinisher who has three children, three cats and a 100-pound Labrador retriever. She and her husband enjoy trying out new tapas places.

Overgram: I can post the picture of my furniture/piece to Instagram with a title like “The Sully Console” or “Ollie & the French Linen dresser” (when my orange cat perches on a dresser). It personalizes the picture.

Open Table: As parents to small kids, we don't get out much. So when we have a sitter, I want to find a great restaurant for the mood I'm in.

Spotify: The only way to listen to music when I paint in my garage!

Grub Hub: Food from ANY restaurant delivered? Amazing! Now even my husband can “make” dinner.

Simon Jacobsen, a principal in the Washington firm Jacobsen Architecture: Jacobsen travels about 70,000 miles a year checking on projects. He has two children, 6 and 10. He is developing an app for his architectural history website project, Vanished Washington.

Dual Level: I use this for final inspections to check angles of surfaces and to make sure countertops and framing are plumb and true.

Roman Numerals: When traveling in Europe and faced with difficult ancient Roman numerals on buildings and art such as “MMXIII,” it will translate for you that they mean “2013.”

LodgeNet: Checking into a hotel and hoping not to get too personal with the room's dodgy remote? Use this app to control the TV and cable box in the room.

Cards: Apple's very polite and useful method of sending thank-you notes and invitations from your iPhone, all stamped, mailed and delivered.

Raji Radhakrishnan, an interior designer with offices in Virginia and New York: Radhakrishnan loves listening to '80s dance music at the gym.

Penultimate (for iPad): Great to quickly sketch an idea and email it instantly. While on the train to New York and planning for the Kips Bay Show House last year with the studio on the phone, I actually sketched the ceiling medallion on the Penultimate app and emailed it to the studio from the train.

Evernote: Grabbing videos, pictures and taking notes simultaneously while having it all synced across my computer, iPad and iPhone is very useful.